What does sound look like?
Video By www.npr.org
You can actually see sound waves as they travel through the air thanks to a clever photographic trick.
Produced by Adam Cole Hands shot by Meg Vogel Schlieren images provided by Mike Hargather (http://infohost.nmt.edu/~mjh/people.html) Amber Kates Bobby Gold J. W. Tang, A. Nicolle and J. Pantelic.